3 calculators in this category
- Enthalpy of Reaction Calculator (Heats of Formation)Hess's law applied to standard enthalpies of formation at 298.15 KThe standard enthalpy change of any reaction is the sum of the formation enthalpies of the products minus the sum for the…
- Calorimetry Heat Calculator (q = mcΔT)Constant-pressure calorimetry, q = mcΔTA calorimetry experiment measures heat indirectly: you record a temperature change and convert it with q = mcΔT. Enter the mass…
- Gibbs Free Energy CalculatorΔG = ΔH − TΔS; ΔG° = −RT ln K (CODATA 2018 gas constant)Gibbs free energy decides direction. A process runs forward on its own when ΔG is negative, and ΔG = ΔH − TΔS puts a number on…
Which one do you need?
- Enthalpy of Reaction Calculator (Heats of Formation)
- Calculate the standard enthalpy change of a reaction from tabulated heats of formation. Get ΔH in kJ, kJ per mole and kJ per gram, with each term shown.
- Calorimetry Heat Calculator (q = mcΔT)
- Compute heat from mass, specific heat and temperature change, add the calorimeter constant, and convert to a molar enthalpy in kJ/mol with full steps.
- Gibbs Free Energy Calculator
- Compute ΔG from ΔH, ΔS and temperature, find the crossover temperature where spontaneity flips, and convert ΔG to the equilibrium constant K.